Evidences of Chemical and Physical Changes

When two liquids are mixed and a solid forms as a result of a reaction, the solid is called a

• participant

• percipitate

• polypeptide

• precipitate

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The brown color of a cut apple can be called

• physical change

• chemical change

• evidence of chemical reaction

• all of the above

Tags

NGSS.MS-PS1-2

Which of the following examples shows that a chemical reaction has occurred? 

• A rock breaks into smaller pieces when it is struck with a hammer.

• Rust forms on a hammer that has been left outside to long. 

• A cup of water turns pink when a few drops of red food coloring are added. 

• A solid is formed when heat is removed from a sample of water. 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Evidence of a chemical reactions is anything that shows - 

• a new substance has formed

• a solid dissolved in a liquid

• interaction between 2 gases

• a change in the state of matter

Tags

NGSS.MS-PS1-2

A change in which NEW substances are formed.

• Chemical change

• Physical change

• Casual change

• Formal change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Bubbles form when two or more substances are combined ...

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

An explosion occurs ...

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Ice turns into water then steam.  This is an example of 

• plasma

• production

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Is wood burning a physical or chemical change?

• Physical 

• Chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Which of the following is NOT an example of chemical change?

• sour milk

• burning wood

• breaking a pencil

• rust

Tags

NGSS.MS-PS1-2